Method of and apparatus for exhausting the air and extracting the water from the



(No Model.)

J. J. MANNING.

- METHOD OF AND APPARATUS FOR EXHAUSTING THE AIR AND EXTRAUTING THEWATER FROM THE SUCTION BOXES OF PAPER MACHINES.

No. 282,097. Patnted July 31, 1883.

wrmnssnm INVENT a N. PEIERS. moumom mr. Washin ton. D. c.

. of that class of machines.

. UNITED STATES PATENT OFFICE.

JOHN J. MANNING, or GREAT BARRINGTON, MASSACHUSETTS.

METHOD OF AND APPARATUS FOR EXHAUSTING THE AIR AND EXTRACTING THE WATERFROM THE SUCTION-BOXES OF PAPER-MACHINES.

SPECIFICATION forming art of Letters Patent No. 282,097, dated July 31,1883.

Application filed June 20, 1883. (No model.)

To all whom it may concern:

Be it known that I, JOHN J. MANNING, a citizen of the United States, anda resident of Great Barrington, in the county of Berkshire and State ofMassachusetts, have invented certain new and useful Improvements in aMethod of and Apparatus for Exhausting the Air and Extracting the WVaterfrom the Suction- Boxes of Paper-Machines; and I do hereby declare thatthe following is a full, clear, and. exact description of the invention,which will enable others skilled in the art to which it appertains tomake and use the same, reference beinghad to the accompanying drawings,which form a part of this specification, and in which- Figure 1 is aside elevation of so much of a paper-machine of the Fourdrinier patternas is necessary to illustrate the application of my invention with myapparatus in operative position;- and Fig. 2 is a vertical sectionalview of my improved steam-j et pump, which is used in connection withand forms a part of my apparatus.

Similar letters of reference indicate corresponding parts in both thefigures.

In the manufacture of paper on machines of the so-called Fourdriniertype or pattern, as well as on so-called cylinder machines, thepreliminary process consists in extracting the water from the paper-pulpwhile it is traveling with the web of wire-cloth or felt over thevacuum-boxes or suction-boxes, which form parts By the means heretoforeemployed for this purpose it has been found impossible to use the waterdrawn by the suction-boxes from the pump over again, as thesuction-water, containing resin and other ingredients in solution,willferment and form a soapy slime, which will stick to the inside ofthe pipes when the machine is stopped to changeto other widths or colorsof paper, and, afteragain starting the machine, this slime, breakingaway from the walls of the pipes, is apt to leave black spots upon andotherwise disfigure the paper. Where fresh water is used it will benoticed that at times .it is more or less dirty, thus causing variousshades in the paper, which is of course also objectionable.

The obj ect of my improvement is to use the suction-water over and overagain, thereby saving the chemicals and other ingredients contained init, which have heretofore gone to waste. I have found by experiment andactual analysis that the water drawn from the suction-boxes containsfrom five to fifteen per cent. of coloring-matter, from ten to forty percent. of the alum which is used for sizing, from three to ten per cent.of resin, and where clay is used from tento forty per cent. of it isdrawn with the suctionwater into the boxes.

My invention therefore consists, first, in an improved method ofexhausting the air and extracting the water from thevacuum-boxes orsuction-boxes; secondly, in the construction and combination of parts ofthe apparatus, as a whole, used for that purpose; and, thirdly, in theimproved construction and combination of parts of a graduating steam-jet pump adapted to be used in connection with, and forming an operativepart of, my apparatus.

In the accompanying drawings, A, A, and A are the vacuum-boxes orsuction-boxes of a machine employing three of these, the first two ofthese boxes being located before the dandy-roll (shown at N) andconnected by a pipe, 13, running at an angle of, about fifteen degrees,to the discharge-pipe O of the third or last box, A". The inclined pipeB is provided with valves D I), for regulating the amount of water to betaken out of the sheet of pulp or fiber before it passes under thedandy. The object of connecting-pipe 0, through which suctionbox Adischarges, with the first two boxes in this manner is to prevent theuse ofifresh water in priming pipe 0, inasmuch as the water from boxes Aand A will act as a primer for box A-'. The lower end of pipeO extendsdown to the floor, where it is connected by an elbow, C, to a horizontalpipe, E, leading to and connecting with the inlet of the pump F. Theconstruction of the latter, which is shown in detail in Fig. 2 of thedrawings, will be hereinafter more fully described, and from the openingor outlet in its upper end extends the discharge-pipe I, which isconnected or coupled at its upper end to a pipe, 3', passingtransversely across the machine to the back part of the same, where itdischarges into the water box or reservoir K, which is provided with anoverfiow- IOC) pipe, L. From the water-box K the water may be fed intothe fan-pump box M through the valve K.

The pump consists of a spherical casing or globe, F, made of metal orother suitable material, having an inlet at its lower end and adischarge-opening at its upper end. which is suitably connected with orcoupled to the discharge-pipe I. This globe is provided with atransverse steam-pipe, G which by preference is made tapering, andprovided at its outer or reduced end with the blow-off cock H. At itslarge end the steam-pipe is connected to another pipe, G, through whichsteam is fed from the boiler, the flow of steam being regulated by meansof the valve G. he transverse steampipe G", inside of the globe, isprovided with a conical or tapering nozzle, P, pointing upwardly.Inserted over this nozzle is the movable or adjustable graduating-nozzleQ, which is in the shape of a double funnel contracted at its middlepart, Q. This adjustable nozzle is provided with a screw-threadedcollar, R, fitting into the threaded seat R, in which it may be fixed inits adjusted position by means of the threaded jam-collar S. Byunscrewing the latter it will be seen that the adjustable noz zle Q,with itseollar B, may be screwed up or down in itsseat, so as to adjustits position relative to the fixed nozzle I and after it has j beenproperly adjusted it may be fixed in its position by tightening down thej am-collar S. I prefer to attach the discharge-pipe I to the pump bymeans of a jam-collar, T, which bears against the lower flanged end ofthe dischargc-pipe, apackingrin g (shown at U) being inserted betweenthe flange of the dischargeter is demanded, nozzle Q is adjusted so asto lncrease the distance between its enlarged lower end and the top ofthe fixed nozzle, while, if a strong jet of steam but less water isrequired, it is adjusted in the opposite direction, so as to decreasethe distance between it and the fixed nozzle. which accumulates in thesteam-pipe should be blown off, when required, through the blowoff cockH, to prevent discoloration of the paper if it should become mixed withthe suction-water, as it is usually charged with oxides to a greater orless extent. As the water is drawn from the suction-boxes into the pumpit 1s charged with a soapy slime, formed in the manner described at theoutset of this speci- The position of this adjust-able nozzle fication.This slime, however, will not adhere to the pipes, inasmuch as thesehave become partiallylheated, and as it enters the spherical chamberinside of the globe with the suctioirwater, and is blown up through thecontracted middle part of the adjustable nozzle, it is thoroughlydissolved and mixedwith the water at the point where the contractednozzle again expands, so that I have found by actual experiment that thewater discharged into the water-box K is absolutely free from slime, andforms a clear and thin liquid, adapted to be used over again withoutoccasioning the least discoloration to the paper, or other wise actinginjuriously upon the pulp.

It will be seen that I use only one pump for all the boxes, thuspreventing the undue heating of the pipes, which results from the use ofa pump or ejector for each separate box.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United States- 1. The hereinbefore-describedmethod of ex-' hausting the air and extracting the water from thevacuum-boxes or suction-boxes of paper machines, which consists inconnecting the first boxes before the dandy to the dischargepipe of thelast box by an inclined pipe provided with valves for regulating theflow of air and water through it, and connecting the discharge-pipe ofthe last box to a single suction-pump, substantially as and for thepurpose shown and set forth.

2. In a paper-machine, the combination of the vacuum-boxes orsuctioirboxes A, A, and A inclined branch pipe B, having valves D,discharge-pipe C, suction-pump F, and discharge-pipe 'I J, substantiallyas and for the purpose shown and set forth.

3. The graduating steam-jet pump herein shown and described, the sameconsisting of the globe F, having an inlet at its lower end, an outletat its'upper end, and provided with the threaded seat R, transversefixed steampipc G having the fixed conical nozzle I, blow-off cock H,adjustable nozzle Q, contracted at Q, and provided with the threadedcollar R, adapted to work in the seat R, and jam-collar S, allconstructed and combined substantially as and for the purpose shown andset forth.

4. In a papern1achine, the combination,

; with the vacuum-boxes or suction-boxes, of an inclined pipedischarging from the first box or 1 boxes before the dandy into thedischarge-pipe 1 of the last after the dandy, whereby the boxes Thewater of condensation are successively primed by the chargedsuction-water from the first box, substantially in the manner and forthe purpose shown and set forth.

5. In a paper-machine, the combination of the v acuum-boxes orsuctioirboxes, an inclined pipe discharging from the first box or boxesbefore the dandy into the discharge-pipe of the last after the dandy,whereby the boxes are successively primed by the charged suci l i i i I-i tion-water from the first box a graduating suction-pump for drawingthe Water through the discharge-pipes, and a pipe discharging from thepump and raised on a level with the 5 suction-boxes toprevent siphoning,substantially as and for the purpose shown and set forth.

In testimony that I claim the foregoing as my own I have hereuntoEtffiXGd my signature in presence of two witnesses.

JOHN JOSEPH MANNING.

Witnesses:

AUGUST PETERSON, LoUIs BAGGER.

